As a big believer in psychological safety in games and simulation, I love the "X" Card.
No point causing traumatic experiences when a few easy actions can reduce the chance of them occurring!
A really great review of some of the tools and techniques can be found at Safety Tools for Tabletop RPGs from Thomas Weinbeger, of Dramadice.
I truly believe in tools such as the “X” card. Although it’s... [click here for more]